sue storm has driven off a celestial . . . 😗
galactus is more than CAPABLE of winning this fight. depends entirely on the level. he'd need to be very highly powered imo to do it. we've seen thor give g some hassles, we've seen thanos do some minimal damage and we know odin is well above thanos in overall power. that armor was WAYYY AMPED. the armor had a portion of power from EVERY skyfather and was laced with the life force of ALL asgard + the odinsword which ranked well above mjollnir in power.
based on a comparison of feats average g would beat odin, but it would be close imo (back in the day odin and g were considered near equals . . .) now consider the armor had power from EVERY skyfather (zeus, vishnu, etc . . .) + all the other power and all of it magic which g doesn't necessarily enjoy going up against though he's done pretty well in the past.
also, g once said that uatu was close to him in power -- exitar killed the LEADER of the watchers with a single blast.
based on in-books feats, i'd say celestials rank above g though again he is capable of beating them. the scans from above are earth x, correct? non-canon?
anyway, this is a VERY close fight imo and depends entirely upon what level we say g is at. average g loses imo.